1/10 Scale 48 Pitch 21T Pinion Gear, Hardened 7075 - 3RAC-PG4821 by 3Racing [3RAC-PG4821]

3RACING 48 Pitch Pinion Gear 21T (7075 w/ Hard Coating) - 3RAC-PG4821

Price:

NZD$6.48

Brand:

3Racing

Model:

3RAC-PG4821

Condition:

Brand New

Quantity:

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Description
FAQ

Precision 21T Pinion for 48 Pitch Systems

The 3RAC-PG4821 is a finely machined 21T pinion built for RC drivers wanting accurate gear engagement. Constructed from 7075 aluminum with a protective hard coat, it maintains tooth profile under sustained loads.

Performance and Compatibility

This pinion delivers consistent torque transfer across many 1/10 scale platforms that use 48 pitch gearing. Its design supports reliable meshing and reduced backlash when installed correctly.

Why Choose 7075 Aluminum?

7075 aluminum delivers exceptional rigidity while keeping weight low, making it a common choice for strength-critical drivetrain parts. The hard coat improves scratch and wear resistance for longer service intervals.

Installation Tips

Fit the 3RAC-PG4821 with attention to shaft seating and mesh spacing. Small adjustments during initial runs will ensure quiet operation and minimize premature tooth wear.

How do I confirm this pinion matches my gearbox?

Measure your existing pinion tooth pitch and bore size; this 21T part fits 48 pitch systems and requires the correct shaft diameter and set screw location.

Does the hard coating affect gear trimming or modification?

The hard coat increases surface toughness, so any trimming should be done cautiously with appropriate tools to avoid chipping the finish.